Image capturing module having a built-in dustproof structure
An image capturing module having a built-in dustproof structure includes an image sensing unit, a housing frame and an actuator structure. The image sensing unit includes a substrate and an image sensing chip disposed on the substrate. The housing frame is disposed on the substrate to surround the image sensing chip. The actuator structure includes a lens holder disposed on the housing frame and a movable lens assembly movably disposed inside the lens holder. More precisely, the lens holder has a first surrounding structure disposed on the inner surrounding surface thereof, and the movable lens assembly has a second surrounding structure disposed on the outer perimeter surface thereof and located above the first surrounding structure, and the first surrounding structure of the lens holder and the second surrounding structure of the movable lens assembly are mated with each other to form the built-in dustproof structure.
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1. Field of the Invention
The instant disclosure relates to an image-capturing module, and more particularly to an image-capturing module having a built-in dustproof structure.
2. Description of Related Art
Recently, it becomes more and more popular for portable devices such as mobile phones or PDA to be equipped with an imaging module. Furthermore, since the market trends of the requirement of more functions and smaller sizes, the imaging modules with high definition are required to downsize. One of the improvements of definition is to increase the number of pixel. The pixel number of an imaging module has already increased from the VGA-level 30 pixels to 2, 5, 8, 13 or even 41 million pixels, which is common in the market. Beside the increase of the pixel, another improvement lies in the definition of the image. Thus, the imaging module of a portable device also develops from a fixed-focus mode to an auto-focus mode or even optical zoom mode.
The auto-focus mode employs the principle of moving the lens in the imaging module suitably according to various distances of targets, whereby the optical image of the desired target can be focused correctly on an image sensor so as to generate a clear image. The common ways of activating the lens to move in the imaging module include activating by a stepping motor, piezoelectric motor and voice coil motor (VCM). However, there is no any dustproof design for the prior imaging module.
SUMMARY OF THE INVENTIONOne aspect of the instant disclosure relates to an image capturing module having a built-in dustproof structure.
One of the embodiments of the instant disclosure provides an image capturing module having a built-in dustproof structure, comprising: an image sensing unit, a housing frame and an actuator structure. The image sensing unit includes a substrate and an image sensing chip disposed on the substrate and electrically connected to the substrate. The housing frame is disposed on the substrate to surround the image sensing chip. The actuator structure is disposed on the housing frame and above the image sensing chip, wherein the actuator structure includes a lens holder disposed on the housing frame and a movable lens assembly movably disposed inside the lens holder. More precisely, the lens holder has a first surrounding structure disposed on the inner surrounding surface thereof, and the movable lens assembly has a second surrounding structure disposed on the outer perimeter surface thereof and located above the first surrounding structure, and the first surrounding structure of the lens holder and the second surrounding structure of the movable lens assembly are mated with each other to form the built-in dustproof structure.
Another one of the embodiments of the instant disclosure provides an image capturing module having a built-in dustproof structure, comprising: an image sensing unit, a housing frame and an actuator structure. The image sensing unit includes a substrate and an image sensing chip disposed on the substrate and electrically connected to the substrate. The housing frame is disposed on the substrate to surround the image sensing chip. The actuator structure is disposed on the housing frame and above the image sensing chip, wherein the actuator structure includes a lens holder disposed on the housing frame and a movable lens assembly disposed inside the lens holder, the lens holder includes a surrounding movable member movably disposed therein, the movable lens assembly is fixed inside the surrounding movable member through at least two tiny bonding glue, and the movable lens assembly is movably disposed inside the lens holder through the surrounding movable member. More precisely, the surrounding movable member of the lens holder has a first surrounding structure disposed on the inner surrounding surface thereof, and the movable lens assembly has a second surrounding structure disposed on the outer perimeter surface thereof and located above the first surrounding structure, and the first surrounding structure of the surrounding movable member and the second surrounding structure of the movable lens assembly are mated with each other to form the built-in dustproof structure.
More precisely, the image capturing module further comprises an optical filter disposed on the housing frame and located between the image sensing chip and the movable lens assembly, wherein the housing frame has a top opening enclosed by the optical filter, wherein both the inner surrounding surface of the lens holder and the outer perimeter surface of the movable lens assembly are threadless surfaces or thread surfaces.
Therefore, because the lens holder has a first surrounding structure disposed on the inner surrounding surface thereof and the movable lens assembly has a second surrounding structure disposed on the outer perimeter surface thereof and located above the first surrounding structure, the first surrounding structure of the lens holder and the second surrounding structure of the movable lens assembly can be mated with each other to form the built-in dustproof structure. Whereby, when the external dust passes through the gap between the lens holder (or the surrounding movable member) and the movable lens assembly to get into the built-in dustproof structure that is composed of the first surrounding structure and the second surrounding structure, the external dust is obstructed by the first surrounding blocking portion (or the second surrounding blocking portion), so that the external dust can be gathered in the first surrounding space (or the second surrounding space).
To further understand the techniques, means and effects of the instant disclosure applied for achieving the prescribed objectives, the following detailed descriptions and appended drawings are hereby referred to, such that, and through which, the purposes, features and aspects of the instant disclosure can be thoroughly and concretely appreciated. However, the appended drawings are provided solely for reference and illustration, without any intention to limit the instant disclosure.
The embodiments of “an image capturing module having a built-in dustproof structure” of the instant disclosure are described below by means of specific examples, and other advantages and objectives of the instant disclosure can be easily understood by one skilled in the art from the disclosure of the description. The instant disclosure can be embodied or applied in other different embodiments, and various modifications and variations can be made to various details in the description for different applications without departing the scope of the instant disclosure. Also, the drawings of the instant disclosure are provided for only simple illustrations, and are not drawn to scale, that is, do not reflect the actual relative dimensions. The following embodiments are provided to describe in detail the concept of the instant disclosure, and are not intended to limit the scope thereof in any way.
First EmbodimentReferring to
First, as shown in
Moreover, as shown in
It is worth mentioning that the above-mentioned adhesive material may be UV adhesive glue, thermosetting glue or curing glue applied to oven etc., but it is merely an example and is not meant to limit the instant disclosure.
More precisely, as shown in
More precisely, referring to
For example, as shown in
More precisely, referring to
Whereby, when the external dust passes through the gap between the inner surrounding surface 3000 of the lens holder 30 or the surrounding movable member 30M and the second surrounding extending portion 310A of the movable lens assembly 31 to get into the built-in dustproof structure that is composed of the first surrounding structure 300 and the second surrounding structure 310, the external dust is obstructed by the first surrounding blocking portion 300B, so that the external dust can be gathered in the first surrounding space 300C.
It is worth mentioning that the movable lens assembly 31 can be fixed inside the surrounding movable member 30M through the at least two tiny bonding glue H on the premise of the following conditions: (1) the bottom side of the surrounding movable member 30M directly contacts the top surface of the optical filter 4; (2) the bottom side of the surrounding movable member 30M directly contacts the top side of the housing frame 2; or (3) the second surrounding structure 310 directly contacts the first surrounding structure 300, but it is merely an example and is not meant to limit the instant disclosure.
Second EmbodimentReferring to
More precisely, as shown in
It is worth mentioning that the movable lens assembly 31 can be fixed inside the surrounding movable member 30M through the at least two tiny bonding glue H on the premise of the following conditions: (1) the bottom side of the surrounding movable member 30M directly contacts the top surface of the optical filter 4; (2) the bottom side of the surrounding movable member 30M directly contacts the top side of the housing frame 2; or (3) the second surrounding structure 310 directly contacts the first surrounding structure 300, but it is merely an example and is not meant to limit the instant disclosure.
Third EmbodimentReferring to
Whereby, when the external dust passes through the gap between the first surrounding extending portion 300A of the lens holder 30 or the surrounding movable member 30M and the outer perimeter surface 3100 of the movable lens assembly 31 to get into the built-in dustproof structure that is composed of the first surrounding structure 300 and the second surrounding structure 310, the external dust is obstructed by the second surrounding blocking portion 310B, so that the external dust can be gathered in the second surrounding space 310C.
Fourth EmbodimentReferring to
Whereby, when the external dust passes through the gap between the first surrounding structure 300 of the lens holder 30 or the surrounding movable member 30M and the outer perimeter surface 3100 of the movable lens assembly 31 to get into the built-in dustproof structure that is composed of the first surrounding structure 300 and the second surrounding structure 310, the external dust is obstructed by the second surrounding blocking portion 310B, so that the external dust can be gathered in the second surrounding space 310C.
In conclusion, because the lens holder 30 has a first surrounding structure 300 disposed on the inner surrounding surface 3000 thereof and the movable lens assembly 31 has a second surrounding structure 310 disposed on the outer perimeter surface 3100 thereof and located above the first surrounding structure 300, the first surrounding structure 300 of the lens holder 30 and the second surrounding structure 310 of the movable lens assembly 31 can be mated with each other to form the built-in dustproof structure. Whereby, when the external dust passes through the gap between the lens holder 30 (or the surrounding movable member 30M) and the movable lens assembly 31 to get into the built-in dustproof structure that is composed of the first surrounding structure 300 and the second surrounding structure 310, the external dust is obstructed by the first surrounding blocking portion 300B (or the second surrounding blocking portion 310B), so that the external dust can be gathered in the first surrounding space 300C (or the second surrounding space 310C).
The above-mentioned descriptions merely represent the preferred embodiments of the instant disclosure, without any intention or ability to limit the scope of the instant disclosure which is fully described only within the following claims. Various equivalent changes, alterations or modifications based on the claims of the instant disclosure are all, consequently, viewed as being embraced by the scope of the instant disclosure.
Claims
1. An image capturing module having a built-in dustproof structure, comprising:
- an image sensing unit including a substrate and an image sensing chip disposed on the substrate and electrically connected to the substrate;
- a housing frame disposed on the substrate to surround the image sensing chip;
- an actuator structure disposed on the housing frame and located above the image sensing chip, wherein the actuator structure includes a lens holder disposed on the housing frame and a movable lens assembly movably disposed inside the lens holder;
- wherein the lens holder has a first surrounding structure disposed on the inner surrounding surface thereof, and the movable lens assembly has a second surrounding structure disposed on the outer perimeter surface thereof and located above the first surrounding structure, and the first surrounding structure of the lens holder and the second surrounding structure of the movable lens assembly are mated with each other to form the built-in dustproof structure.
2. The image capturing module of claim 1, further comprising: an optical filter disposed on the housing frame and located between the image sensing chip and the movable lens assembly, wherein the housing frame has a top opening enclosed by the optical filter, wherein both the inner surrounding surface of the lens holder and the outer perimeter surface of the movable lens assembly are threadless surfaces or thread surfaces.
3. The image capturing module of claim 1, wherein the first surrounding structure has a first surrounding extending portion substantially horizontally extended from the inner surrounding surface of the lens holder and toward the outer perimeter surface of the movable lens assembly and a first surrounding blocking portion substantially upwardly and vertically extended from the first surrounding extending portion, and the inner surrounding surface, the first surrounding extending portion and the first surrounding blocking portion of the lens holder are sequentially connected to form a first surrounding space, wherein the second surrounding structure has a second surrounding extending portion substantially horizontally extended from the outer perimeter surface of the movable lens assembly and toward the inner surrounding surface of the lens holder, and the second surrounding extending portion is adjacent to the first surrounding blocking portion and disposed above the first surrounding blocking portion.
4. The image capturing module of claim 1, wherein the first surrounding structure has a first surrounding extending portion substantially horizontally extended from the inner surrounding surface of the lens holder and toward the outer perimeter surface of the movable lens assembly and a first surrounding blocking portion substantially upwardly and vertically extended from the first surrounding extending portion, and the inner surrounding surface, the first surrounding extending portion and the first surrounding blocking portion of the lens holder are sequentially connected to form a first surrounding space, wherein the second surrounding structure has a second surrounding extending portion substantially horizontally extended from the outer perimeter surface of the movable lens assembly and toward the inner surrounding surface of the lens holder and a second surrounding blocking portion downwardly and vertically extended from the second surrounding extending portion, the second surrounding extending portion is adjacent to the first surrounding blocking portion and disposed above the first surrounding blocking portion, and the first surrounding extending portion is adjacent to the second surrounding blocking portion and disposed under the second surrounding blocking portion.
5. The image capturing module of claim 4, wherein the outer perimeter surface, the second surrounding extending portion and the second surrounding blocking portion of the movable lens assembly are sequentially connected to form a second surrounding space, one portion of the first surrounding blocking portion is arranged in the second surrounding space, and one portion of the second surrounding blocking portion is received in the first surrounding space.
6. An image capturing module having a built-in dustproof structure, comprising:
- an image sensing unit including a substrate and an image sensing chip disposed on the substrate and electrically connected to the substrate;
- a housing frame disposed on the substrate to surround the image sensing chip;
- an actuator structure disposed on the housing frame and located above the image sensing chip, wherein the actuator structure includes a lens holder disposed on the housing frame and a movable lens assembly disposed inside the lens holder, the lens holder includes a surrounding movable member movably disposed therein, the movable lens assembly is fixed inside the surrounding movable member through at least two tiny bonding glue, and the movable lens assembly is movably disposed inside the lens holder through the surrounding movable member;
- wherein the surrounding movable member of the lens holder has a first surrounding structure disposed on the inner surrounding surface thereof, and the movable lens assembly has a second surrounding structure disposed on the outer perimeter surface thereof and located above the first surrounding structure, and the first surrounding structure of the surrounding movable member and the second surrounding structure of the movable lens assembly are mated with each other to form the built-in dustproof structure.
7. The image capturing module of claim 6, further comprising: an optical filter disposed on the housing frame and located between the image sensing chip and the movable lens assembly, wherein the housing frame has a top opening enclosed by the optical filter, wherein both the inner surrounding surface of the surrounding movable member and the outer perimeter surface of the movable lens assembly are threadless surfaces or thread surfaces, and the bottom side of the surrounding movable member directly contacts the top side of the optical filter.
8. The image capturing module of claim 6, wherein the first surrounding structure has a first surrounding extending portion substantially horizontally extended from the inner surrounding surface of the surrounding movable member and toward the outer perimeter surface of the movable lens assembly and a first surrounding blocking portion substantially upwardly and vertically extended from the first surrounding extending portion, and the inner surrounding surface, the first surrounding extending portion and the first surrounding blocking portion of the surrounding movable member are sequentially connected to form a first surrounding space, wherein the second surrounding structure has a second surrounding extending portion substantially horizontally extended from the outer perimeter surface of the movable lens assembly and toward the inner surrounding surface of the surrounding movable member, and the second surrounding extending portion is adjacent to the first surrounding blocking portion and disposed above the first surrounding blocking portion, wherein the bottom side of the surrounding movable member directly contacts the top side of the housing frame.
9. The image capturing module of claim 6, wherein the first surrounding structure has a first surrounding extending portion substantially horizontally extended from the inner surrounding surface of the surrounding movable member and toward the outer perimeter surface of the movable lens assembly and a first surrounding blocking portion substantially upwardly and vertically extended from the first surrounding extending portion, and the inner surrounding surface, the first surrounding extending portion and the first surrounding blocking portion of the surrounding movable member are sequentially connected to form a first surrounding space, wherein the second surrounding structure has a second surrounding extending portion substantially horizontally extended from the outer perimeter surface of the movable lens assembly and toward the inner surrounding surface of the surrounding movable member and a second surrounding blocking portion downwardly and vertically extended from the second surrounding extending portion, the second surrounding extending portion is adjacent to the first surrounding blocking portion and disposed above the first surrounding blocking portion, and the first surrounding extending portion is adjacent to the second surrounding blocking portion and disposed under the second surrounding blocking portion.
10. The image capturing module of claim 9, wherein the outer perimeter surface, the second surrounding extending portion and the second surrounding blocking portion of the movable lens assembly are sequentially connected to form a second surrounding space, one portion of the first surrounding blocking portion is arranged in the second surrounding space, and one portion of the second surrounding blocking portion is received in the first surrounding space, wherein the second surrounding structure directly contacts the first surrounding structure.
7460317 | December 2, 2008 | Webster |
8902325 | December 2, 2014 | Weatherford |
20070064317 | March 22, 2007 | Chen |
Type: Grant
Filed: Jul 16, 2014
Date of Patent: Aug 30, 2016
Patent Publication Number: 20160021282
Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED (Guangzhou), LITE-ON TECHNOLOGY CORPORATION (Taipei)
Inventors: Kuo-Hao Peng (Hsinchu), Po-Chih Hsu (Hsinchu County)
Primary Examiner: Ahmed A Berhan
Application Number: 14/333,295
International Classification: H04N 5/225 (20060101); H04N 5/217 (20110101);